Clinical Study on Various Pains for Therapeutic Effectiveness with Applications of Static Fields

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To examine the effectiveness of static magnetic fields (SMF), a pathophysiological study of various painful conditions was performed using thermography in conjunction with the subjective and objective symptoms. A total of 210 patients (70 men and 140 women, age range ; 17 to 92 years. mean age ; 64.7 years, medical history ; 1 week to 36 years, mean history ; 4.4 years) with frozen shoulder pain (FSP), low back pain (LBP), elbow pain (EP) and/or knee pain (KP) were investigated. The subjective and objective symptoms were evaluated with inspection and palpation in conjunction with a visual analog scale (VAS). Active and dummy magnets were randomly assigned to the patients under a double blind test. Active magnets were applied externally to the painful area using samarium-cobalt (Sm-Co) magnets (180 mT, 4.5 mm in diameter and 2.2 mm in height). Dummy magnets (less than 10 mT) were also applied externally at random as a placebo. All patients wore 8 to 40 pieces of active or dummy magnets for 3 days for EP,or 3 weeks for FSP, LBP and KP,after which the magnets were removed. Before the treatment, the skin temperature in the painful area was generally lower than that in the healthy or painless area. After application of the active magnets, the subjective and objective symptoms were improved significantly at 3 days for EP,or 3 weeks for FSP, LBP and KP in accordance with an increase in skin temperature in the painful area. Until 1 week after removal of the active magnets, the pain relief persisted in the patients with LBP and KP. These findings suggest that SMF might gradually increase the blood circulation in areas with ischemic pain, thereby improving the subjective and objective symptoms.
2000-09-30

Clinical Study on Various Pains for Therapeutic Effectiveness with Applications of Static Fields

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